CN212458079U - Integrally welded aluminum pipe aluminum sheet heat exchanger - Google Patents
Integrally welded aluminum pipe aluminum sheet heat exchanger Download PDFInfo
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- CN212458079U CN212458079U CN202021689970.4U CN202021689970U CN212458079U CN 212458079 U CN212458079 U CN 212458079U CN 202021689970 U CN202021689970 U CN 202021689970U CN 212458079 U CN212458079 U CN 212458079U
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Abstract
The utility model provides an overall welded aluminum pipe aluminum sheet heat exchanger, including a plurality of aluminum pipes and aluminium foil fin, interference fit between aluminum pipe and the aluminium foil fin, the aluminum pipe is through brazing and aluminium foil fin integrated into one piece. The utility model discloses a heat exchanger adopts aluminum pipe and aluminium foil fin, and the aluminum pipe surface contains the coating of brazing filler metal, and in the brazing furnace of welding elbow, the temperature is higher than the brazing filler metal melting point and is less than aluminium material melting point, and the elbow welds as an organic whole with the aluminum pipe through welding ring welding, and the brazing filler metal coating on aluminum pipe surface reaches the welding melting point simultaneously, and the aluminum pipe becomes an organic whole with aluminium foil fin through the brazing filler metal melting, can make the fin keep fixed in horizontal direction, and the fin welds as an organic whole with the aluminum pipe is complete; the heat exchange device can effectively avoid the heat contact resistance between the aluminum pipe and the aluminum sheet caused by the clearance generated by the transverse movement of the fins, and reduce the heat exchange efficiency.
Description
Technical Field
The utility model relates to an air conditioner technical field, in particular to whole welded aluminum pipe aluminum sheet heat exchanger.
Background
The heat exchanger of the air conditioner is mostly assembled by adopting copper pipes and aluminum foil fins in the current market, and then the inner pipe diameter of the copper pipes is expanded through a pipe expanding machine, so that the copper pipes and the aluminum foil fins are tightly attached in an interference manner, the contact thermal resistance between the copper pipes and the aluminum foil is reduced, and the heat exchange efficiency is increased.
Based on this, an integrally welded aluminum tube and aluminum sheet heat exchanger with uniform heat exchange and high heat exchange efficiency is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model aims at providing a whole welded aluminum pipe aluminum sheet heat exchanger, through brazing stove integral type welding aluminium elbow, aluminum pipe, reach the aluminum pipe and become an organic whole with the melting of aluminium foil fin, effectively prevent air conditioner operation in-process fin slip scheduling problem, improved heat exchange efficiency.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the integrally welded aluminum tube and aluminum sheet heat exchanger comprises a plurality of aluminum tubes and aluminum foil fins, wherein the aluminum tubes and the aluminum foil fins are in interference fit, and the aluminum tubes and the aluminum foil fins are integrally formed through brazing.
Further, the aluminum pipe and the aluminum foil fin are tightly attached in an interference fit mode through a pipe expander.
Further, the outer surface of the aluminum pipe contains a coating of brazing material.
Furthermore, the aluminum pipe comprises an aluminum elbow, wherein welding rings are arranged at two ends of the aluminum elbow, and the two ends of the aluminum elbow are welded with the end of the aluminum pipe into a whole through the welding rings.
Further, the aluminum elbow is welded through a vacuum brazing furnace and used for realizing the welding of the welding ring and the end of the aluminum pipe and the welding of the coating of the brazing material on the outer surface of the aluminum pipe and the aluminum foil fin.
Furthermore, the melting points of the welding ring and the brazing material are 438 ℃, and the melting point of the aluminum foil fin is 660 ℃.
Furthermore, the aluminum tubes are long U-shaped aluminum tubes, and a plurality of long U-shaped aluminum tubes are evenly distributed in the aluminum foil fins side by side.
In order to achieve the above object, the utility model also provides a manufacturing method of whole welded aluminum pipe aluminum sheet heat exchanger, including following steps:
s1, adopting an aluminum tube and an aluminum foil fin, and adding a coating containing brazing solder on the outer surface of the aluminum tube;
s2, expanding the aluminum pipe of the heat exchanger through a pipe expander;
s3, welding the aluminum elbow through a brazing furnace, wherein the temperature in the brazing furnace for welding the aluminum elbow is higher than the melting point of the brazing material and lower than the melting point of the aluminum material;
s4, in the vacuum brazing furnace, the aluminum elbow is welded with the aluminum pipe into a whole through welding rings, meanwhile, the brazing material coating on the surface of the aluminum pipe reaches the welding melting point, and the aluminum pipe and the aluminum foil fin are fused into a whole through brazing materials.
Has the advantages that: the utility model discloses a heat exchanger adopts aluminum pipe and aluminium foil fin, the aluminum pipe surface contains the coating of brazing material, adopt the expand tube technology earlier to tightly fix aluminum pipe-aluminium fin together through interference fit, insert the elbow of taking the welding ring in long u tube end, in the vacuum brazing stove of welding elbow and aluminum pipe-aluminium foil fin, the temperature is higher than brazing material melting point and is less than aluminium material melting point, the elbow welds through the welding ring and the aluminum pipe is as an organic whole, the brazing material coating of aluminum pipe surface reaches the welding melting point simultaneously, the aluminum pipe becomes an organic whole with aluminium foil fin through brazing material melting, can make the fin keep fixed in horizontal, fin and aluminum pipe weld completely as an organic whole; the heat exchange device can effectively avoid the heat contact resistance between the aluminum pipe and the aluminum sheet caused by the clearance generated by the transverse movement of the fins, and reduce the heat exchange efficiency; in addition, the heat exchanger of the utility model has small mass and low cost, can greatly improve the heat exchange efficiency, and has uniform heat exchange; because the heat exchanger is made of aluminum, the recovery is very convenient.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of an integrally welded aluminum tube-aluminum sheet heat exchanger according to an embodiment of the present invention;
fig. 2 is a schematic view of a connection structure between an aluminum pipe and an aluminum foil fin, an aluminum elbow according to an embodiment of the present invention.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
Referring to fig. 1: the integrally welded aluminum tube and aluminum sheet heat exchanger comprises a plurality of aluminum tubes 1 and aluminum foil fins 2, wherein the aluminum tubes 1 and the aluminum foil fins 2 are in interference fit, and the aluminum tubes 1 and the aluminum foil fins 2 are integrally formed through brazing.
The aluminum pipe and the aluminum foil fin are assembled in an interference mode, in addition, the aluminum pipe and the aluminum foil fin are integrally formed through brazing, the aluminum pipe and the aluminum foil fin are prevented from displacing when the air conditioner works, and the heat exchange efficiency of the heat exchanger is improved.
Specifically, the aluminum pipe 1 and the aluminum foil fin 2 are tightly attached in an interference fit mode through a pipe expander, and the outer surface of the aluminum pipe 1 contains a coating of brazing materials.
It should be noted that, in this embodiment, mechanical tube expansion or hydraulic tube expansion can be performed by the tube expander, and this embodiment improves the brazing stability.
Referring to fig. 2: the aluminum pipe is characterized by further comprising an aluminum elbow 3, wherein welding rings 301 are arranged at two ends of the aluminum elbow 3, and two ends of the aluminum elbow 3 are welded with the end 101 of the aluminum pipe into a whole through the welding rings 301.
Specifically, the aluminum elbow 3 is welded by a vacuum brazing furnace to realize the welding of the welding ring 301 and the aluminum pipe end 101 and the welding of the coating of the brazing material on the outer surface of the aluminum pipe 1 and the aluminum foil fin 2.
In the embodiment, the aluminum elbow is welded with the brazing furnace, and the heat conduction is carried out through the connected aluminum pipe, so that the welding stability of the coating of the brazing material on the outer surface of the aluminum pipe and the aluminum foil fin is improved.
Specifically, the melting points of the welding ring 301 and the brazing material are 438 ℃, and the melting point of the aluminum foil fin 2 is 660 ℃.
When the temperature in the brazing furnace reaches 438 ℃ and is lower than 660 ℃, the embodiment ensures that the aluminum elbow is welded with the aluminum pipe into a whole through the welding ring, and meanwhile, the brazing material coating on the surface of the aluminum pipe reaches the welding melting point, so that the aluminum pipe and the aluminum foil fin are fused into a whole through the brazing material.
Preferably, the aluminum pipe 1 is a long U-shaped aluminum pipe, and a plurality of long U-shaped aluminum pipes are uniformly distributed in the aluminum foil fin 2 side by side.
This embodiment has improved the heat exchange efficiency of heat exchanger.
Example 2
In order to achieve the above object, the present embodiment further provides a method for manufacturing an integrally welded aluminum tube-aluminum sheet heat exchanger, including the following steps:
s1, adopting an aluminum tube and an aluminum foil fin, and adding a coating containing brazing solder on the outer surface of the aluminum tube;
s2, expanding the aluminum pipe of the heat exchanger through a pipe expander;
s3, welding the aluminum elbow through a brazing furnace, wherein the temperature in the brazing furnace for welding the aluminum elbow is higher than the melting point of the brazing material and lower than the melting point of the aluminum material;
s4, in the vacuum brazing furnace, the aluminum elbow is welded with the aluminum pipe into a whole through welding rings, meanwhile, the brazing material coating on the surface of the aluminum pipe reaches the welding melting point, and the aluminum pipe and the aluminum foil fin are fused into a whole through brazing materials.
After the tube expansion of the heat exchanger in the embodiment, an aluminum elbow needs to be welded through a brazing furnace, welding rings are arranged at two ends of the aluminum elbow, the melting points of the welding rings and brazing materials are 438 ℃, the melting point of an aluminum tube aluminum foil fin is 660 ℃, the temperature in the vacuum brazing furnace for welding the elbow is higher than the melting point of the brazing materials and lower than the melting point of aluminum materials, the elbow is welded with the aluminum tube through the welding rings into a whole, meanwhile, the brazing material coating on the surface of the aluminum tube reaches the welding melting point, so that the aluminum tube and the aluminum foil fin are fused into a whole through the brazing materials, the fin can be kept fixed in the transverse direction, the fin can be effectively prevented from falling off; the heat exchanger of this embodiment preparation is of small quality, and is with low costs, can greatly improve heat exchange efficiency, and the heat transfer is even.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The integrally welded aluminum tube and aluminum sheet heat exchanger is characterized by comprising a plurality of aluminum tubes (1) and aluminum foil fins (2), wherein the aluminum tubes (1) and the aluminum foil fins (2) are in interference fit, and the aluminum tubes (1) and the aluminum foil fins (2) are integrally formed through brazing.
2. The integrally welded aluminum tube-aluminum sheet heat exchanger as recited in claim 1, wherein the aluminum tube (1) and the aluminum foil fin (2) are closely interference-fitted by means of a tube expander.
3. An integrally welded aluminum tube and sheet heat exchanger according to claim 1 wherein the outer surface of the aluminum tube (1) contains a coating of brazing material.
4. The integrally welded aluminum tube aluminum sheet heat exchanger according to claim 3, further comprising an aluminum elbow (3), wherein both ends of the aluminum elbow (3) are provided with welding rings (301), and both ends of the aluminum elbow (3) are welded with the aluminum tube ends (101) through the welding rings (301).
5. The integrally welded aluminum pipe aluminum sheet heat exchanger as recited in claim 4, wherein the aluminum elbow (3) is welded by a vacuum brazing furnace for achieving welding of a weld ring (301) to an aluminum pipe end (101) and welding of a brazing material coating of an outer surface of the aluminum pipe (1) to an aluminum foil fin (2).
6. The integrally welded aluminum tube aluminum sheet heat exchanger according to claim 5, wherein the melting points of the weld ring (301) and the brazing material are each 438 degrees Celsius, and the melting point of the aluminum foil fin (2) is 660 degrees Celsius.
7. The integrally welded aluminum tube aluminum sheet heat exchanger as recited in claim 2, wherein the aluminum tube (1) is a long U-shaped aluminum tube, and a plurality of the long U-shaped aluminum tubes are uniformly distributed side by side in the aluminum foil fin (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021689970.4U CN212458079U (en) | 2020-08-13 | 2020-08-13 | Integrally welded aluminum pipe aluminum sheet heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021689970.4U CN212458079U (en) | 2020-08-13 | 2020-08-13 | Integrally welded aluminum pipe aluminum sheet heat exchanger |
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| CN212458079U true CN212458079U (en) | 2021-02-02 |
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| CN202021689970.4U Active CN212458079U (en) | 2020-08-13 | 2020-08-13 | Integrally welded aluminum pipe aluminum sheet heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879161A (en) * | 2020-08-13 | 2020-11-03 | 滁州普利斯特软件有限公司 | Integrally welded aluminum pipe aluminum sheet heat exchanger and manufacturing method thereof |
-
2020
- 2020-08-13 CN CN202021689970.4U patent/CN212458079U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111879161A (en) * | 2020-08-13 | 2020-11-03 | 滁州普利斯特软件有限公司 | Integrally welded aluminum pipe aluminum sheet heat exchanger and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210918 Address after: 239000, No. 509, Hangzhou North Road, Chuzhou City, Anhui Province Patentee after: CHUZHOU XINGLIAN ELECTRONICS Co.,Ltd. Address before: 239000 Shanghai North Road, Chuzhou, Chuzhou, Anhui Patentee before: Chuzhou pulister Software Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 239000, No. 509, Hangzhou North Road, Chuzhou City, Anhui Province Patentee after: Anhui Xinglian Intelligent Control Technology Co.,Ltd. Address before: 239000, No. 509, Hangzhou North Road, Chuzhou City, Anhui Province Patentee before: CHUZHOU XINGLIAN ELECTRONICS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |